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Hanna pH meter
So I just picked up a Hanna pH meter from the same guy. I paid $40. Tested it last night and it appears to work well. I might just have to go with a nitrite/nitrate one too...He has ORP metere, but what the hell is ORP?
So I just picked up a Hanna pH meter from the same guy. I paid $40. Tested it last night and it appears to work well. I might just have to go with a nitrite/nitrate one too...He has ORP metere, but what the hell is ORP?
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